PDF 302 KB, 16 pgs

PDF 302 KB, 16 pgs

TRAINING BARRACKS PRESCRIPTIVE TECHNOLOGY SOLUTION SETS

Alexander Zhivov, Ph.D., Dale Herron and Richard Liesen, Ph.D.

USACE Engineer Research and Development Center

Michael Deru, Ph.D.

National Renewable Energy Lab

List of Tables and Figure

Tables

1

Training Barracks Climate Zone 1A Prescriptive Solution Table.................................................................... 2

2

Training Barracks Climate Zone 2A Prescriptive Solution Table.................................................................... 3

3

Training Barracks Climate Zone 2B Prescriptive Solution Table ................................................................... 4

4

Training Barracks Climate Zone 3A Prescriptive Solution Table.................................................................... 5

5

Training Barracks Climate Zone 3B and 3C Prescriptive Solution Table ...................................................... 6

6

Training Barracks Climate Zone 4A Prescriptive Solution Table.................................................................... 7

7

Training Barracks Climate Zone 4B and 4C Prescriptive Solution Table ...................................................... 8

8

Training Barracks Climate Zone 5A and 5B Prescriptive Solution Table ...................................................... 9

9

Training Barracks Climate Zone 6A and 6B Prescriptive Solution Table .................................................... 10

10

Training Barracks Climate Zone 7A Prescriptive Solution Table.................................................................. 11

11

Training Barracks Climate Zone 8A Prescriptive Solution Table..................................................................12

12

Characteristics of reflective roofing materials............................................................................................... 14

Figure

Schematic ................................................................................................................................................ 15

The use of a climate specific Prescriptive Technology Solution Set shown in Tables 1 to 11 for training

barracks will result in an annual energy consumption less than or equal to the target energy budget figure shown in Attachment 2 for this facility type and climate zone, will meet life cycle cost effectiveness requirements, and will not require any calculations to demonstrate compliance with the

EPACT 2005 30% better requirement utilizing the methodology described in ASHRAE 90.1 Appendix

G. The actual energy consumption budget for each prescriptive solution/climate zone is shown in

Attachment 2. Climate zone identification information for Army locations is also shown in Attachment 2.

Energy and Water Conservation Design Requirements for SRM Projects

Table 1. Training Barracks Climate Zone 1A Prescriptive Solution Table.

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Assembly Max

U-0.0388

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed R-13

U-0.0676

Wood Framed and Other

(2)

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

0.1067

Recommendation

R-25ci

R-38

Cool Roof for Low Slope & Light color all others

R-13

R-13 + R-7.5ci

R-13 + R-3.8ci

R-6.3ci.

R-13

R-13

NR

(4)

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-1.45

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-1.22

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.45

0.25 0.25

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with air-to-air heat recovery exchanger with in series dual DX coils (3.52 COP) and HHW coil on central boiler

SAT control 45ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

All equipment Variable Speed pumps, fans, etc.

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Motorized Control

NR

Friction rate

Sealing

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

80% Et

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Drain Water Heat Recovery

(9)

None None

2

Energy and Water Conservation Design Requirements for SRM Projects

Table 2. Training Barracks Climate Zone 2A Prescriptive Solution Table

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Assembly Max

U-0.0388

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed R-13

U-0.0676

Wood Framed and Other

(2)

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

0.0739

Recommendation

R-25ci

R-38

Cool Roof for Low Slope & Light color all others

R-13

R-13 + R-7.5ci

R-13 + R-3.8ci

R-10.4ci.

R-13

R-13

NR

(4)

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-1.45

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-1.22

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.45

0.25 0.25

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with air-to-air heat recovery exchanger with in series dual DX coils (3.52 COP) and HHW coil on central boiler

SAT control 45ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

All equipment Variable Speed pumps, fans, etc.

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Motorized Control

NR

Friction rate

Sealing

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

80% Et

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Drain Water Heat Recovery

(9)

None None

3

Energy and Water Conservation Design Requirements for SRM Projects

Table 3. Training Barracks Climate Zone 2B Prescriptive Solution Table.

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Assembly Max

U-0.0388

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed R-13

U-0.0676

Wood Framed and Other

(2)

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

0.0739

Recommendation

R-25ci

R-38

Cool Roof for Low Slope & Light color all others

R-13

R-13 + R-7.5ci

R-13 + R-3.8ci

R-10.4ci.

R-13

R-13

NR

(4)

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-1.45

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-1.22

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.45

0.25 0.25

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

ERV

All equipment

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with a 14.0 SEER DX coil (3.52 COP) and HHW coil on central boiler

SAT control 55ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

None 70% - 75% sensible and 70% - 75% latent effectiveness

Variable Speed pumps, fans, etc.

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Motorized Control

NR

Friction rate

Sealing

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

80% Et

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Drain Water Heat Recovery

(9)

None None

4

Energy and Water Conservation Design Requirements for SRM Projects

Table 4. Training Barracks Climate Zone 3A Prescriptive Solution Table.

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Assembly Max

U-0.0388

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed R-13

U-0.0676

Wood Framed and Other

(2)

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

0.0739

Recommendation

R-25ci

R-38

Cool Roof for Low Slope & Light color all others

R-13

R-13 + R-7.5ci

R-13 + R-3.8ci

R-10.4ci.

R-13

R-13

NR

(4)

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-1.45

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-0.57

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.45

0.37 0.31

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with air-to-air heat recovery exchanger with in series dual DX coils (3.52 COP) and HHW coil on central boiler

SAT control 45ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

All equipment

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Friction rate

Sealing

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

Drain Water Heat Recovery

80% Et

None

Variable Speed pumps, fans, etc.

Motorized Control

NR

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Showers only; 30% efficiency

(9)

5

Energy and Water Conservation Design Requirements for SRM Projects

Table 5. Training Barracks Climate Zone 3B and 3C Prescriptive Solution Table.

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Assembly Max

U-0.0388

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed R-13

U-0.0676

Wood Framed and Other

(2)

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

0.0739

Recommendation

R-25ci

R-38

Cool Roof for Low Slope & Light color all others

R-13

R-13 + R-7.5ci

R-13 + R-3.8ci

R-10.4ci.

R-13

R-13

NR

(4)

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-1.45

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-0.57

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.45

0.37 0.31

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

ERV

All equipment

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with a 14.0 SEER DX coil (3.52 COP) and HHW coil on central boiler

SAT control 55ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

None 70% - 75% sensible and 70% - 75% latent effectiveness

Variable Speed pumps, fans, etc.

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Friction rate

Sealing

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

Drain Water Heat Recovery

80% Et

None

Motorized Control

NR

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Showers only; 30% efficiency

(9)

6

Energy and Water Conservation Design Requirements for SRM Projects

Table 6. Training Barracks Climate Zone 4A Prescriptive Solution Table.

Item Component

(1)

Recommendation

Roof

Walls

Floors Over

Unconditioned

Space

Insulation Entirely Above Deck

Assembly Max

U-0.0325

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed R-13

U-0.0676

Wood Framed and Other

(2)

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

0.0521

F-0.520

R-30ci

R-49

Cool Roof for Low Slope & Light color all others

R-13

R-13 + R-7.5ci

R-13 + R-3.8ci

R-16.7ci.

R-19

R-19

R-15.0 for 24 in.

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-0.50

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-0.57

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.45

0.39 0.31

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with air-to-air heat recovery exchanger with in series dual DX coils (3.52 COP) and HHW coil on central boiler

SAT control 45ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

All equipment

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Friction rate

Sealing

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

Drain Water Heat Recovery

80% Et

None

Variable Speed pumps, fans, etc.

Motorized Control

NR

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Showers only; 30% efficiency

(9)

7

Energy and Water Conservation Design Requirements for SRM Projects

Table 7. Training Barracks Climate Zone 4B and 4C Prescriptive Solution Table.

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Assembly Max

U-0.0325

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed R-13

U-0.0512

Wood Framed and Other

(2)

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

0.0521

F-0.520

Recommendation

R-30ci

R-49

Cool Roof for Low Slope & Light color all others

R-19.5

R-13 + R-12.5ci

R-13 + R-7.5ci

R-16.7ci.

R-19

R-19

R-15.0 for 24 in.

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-0.50

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-0.57

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.42

0.39 0.39

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

ERV

All equipment

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with a 14.0 SEER DX coil (3.52 COP) and HHW coil on central boiler

SAT control 55ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

None 70% - 75% sensible and 70% - 75% latent effectiveness

Variable Speed pumps, fans, etc.

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Friction rate

Sealing

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

Drain Water Heat Recovery

80% Et

None

Motorized Control

NR

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Showers only; 30% efficiency

(9)

8

Energy and Water Conservation Design Requirements for SRM Projects

Table 8. Training Barracks Climate Zone 5A and 5B Prescriptive Solution Table.

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Assembly Max

U-0.0325

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed R-13

U-0.0512

Wood Framed and Other

(2)

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

0.0521

F-0.520

Recommendation

R-30ci

R-49

Cool Roof for Low Slope & Light color all others

R-19.5

R-13 + R-12.5ci

R-13 + R-7.5ci

R-16.7ci.

R-19

R-19

R-15.0 for 24 in.

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-0.50

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-0.57

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.42

0.39 0.39

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

ERV

All equipment

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with a 14.0 SEER DX coil (3.52 COP) and HHW coil on central boiler

SAT control 55ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

None 70% - 75% sensible and 70% - 75% latent effectiveness

Variable Speed pumps, fans, etc.

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Friction rate

Sealing

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

Drain Water Heat Recovery

80% Et

None

Motorized Control

NR

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Showers only; 30% efficiency

(9)

9

Energy and Water Conservation Design Requirements for SRM Projects

Table 9. Training Barracks Climate Zone 6A and 6B Prescriptive Solution Table.

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed

Wood Framed and Other

R-13

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

Assembly Max

(2)

U-0.0245

U-0.0373

0.0377

F-0.510

Recommendation

R-40ci

R-60

NR

(4)

R-19 + R-3ci

R-13 + R-18.8ci

R-13 + R-15.6ci

R-25.1ci.

R-30

R-30

R-20.0 for 24 in.

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-0.50

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-0.57

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.42

0.39 0.39

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

ERV

All equipment

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with a 14.0 SEER DX coil (3.52 COP) and HHW coil on central boiler

SAT control 55ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

None 70% - 75% sensible and 70% - 75% latent effectiveness

Variable Speed pumps, fans, etc.

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Friction rate

Sealing

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

Drain Water Heat Recovery

80% Et

None

Motorized Control

NR

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Showers only; 30% efficiency

(9)

10

Energy and Water Conservation Design Requirements for SRM Projects

Table 10. Training Barracks Climate Zone 7A Prescriptive Solution Table

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed

Wood Framed and Other

R-13

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

Assembly Max

(2)

U-0.0245

U-0.0373

0.0377

F-0.510

Recommendation

R-40ci

R-60

NR

(4)

R-19 + R-3ci

R-13 + R-18.8ci

R-13 + R-15.6ci

R-25.1ci.

R-30

R-30

R-20.0 for 24 in.

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-0.50

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-0.57

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.33

0.49 NR

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

ERV

All equipment

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with a 14.0 SEER DX coil (3.52 COP) and HHW coil on central boiler

SAT control 55ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

None 70% - 75% sensible and 70% - 75% latent effectiveness

Variable Speed pumps, fans, etc.

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Friction rate

Sealing

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

Drain Water Heat Recovery

80% Et

None

Motorized Control

NR

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Showers only; 30% efficiency

(9)

11

Energy and Water Conservation Design Requirements for SRM Projects

Table 11. Training Barracks Climate Zone 8A Prescriptive Solution Table

Roof

Walls

Item Component

(1)

Insulation Entirely Above Deck

Attic and Other R-30

Solar Reflectance

(3)

Mass

Steel Framed

Wood Framed and Other

R-13

Floors Over

Unconditioned

Space

Steel Joist

Wood Framed and Other

Slab-on-Grade Unheated

NR

(4)

Assembly Max

(2)

U-0.0245

U-0.0373

0.0377

F-0.434

Recommendation

R-40ci

R-60

NR

(4)

R-19 + R-3ci

R-13 + R-18.8ci

R-13 + R-15.6ci

R-25.1ci.

R-30

R-30

R-20.0 for 48 in.

Doors

Infiltration

Vertical

Glazing

Non-Swinging U-1.45 U-0.50

Window to Wall Ratio (WWR) 10% - 20%

Thermal transmittance U-0.46

Solar heat gain coefficient

(SHGC)

0.25 cfm/ft

2

@ 75 Pa

(5)

10% - 20%

U-0.33

NR NR

Lighting Power Density (LPD) 1.0 W/ft2 Whole Building

Rooms

≤ 0.9 W/ft

2

0.9 W/ft

2

Interior

Lighting

HVAC

Occupancy Controls

Plug Load Lighting

All Ballasts

Air Conditioner

Gas Furnace

ERV

All equipment

PTAC 12.0 SEER (3.05

COP)

Rooms Manual On/Auto Off

Compact Fluorescent (CFL) with electronic ballast

Electronic

4-Pipe Fan Coil with central chiller and boiler plus

DOAS

(6)

with a 14.0 SEER DX coil (3.52 COP) and HHW coil on central boiler

SAT control 55ºF-62ºF with OAT 75ºF-54ºF

80% E t

None

None 70% - 75% sensible and 70% - 75% latent effectiveness

Variable Speed pumps, fans, etc.

Economizer

Ventilation

Ducts

Service Water

Heating

Outdoor Air Damper

Demand Control

Laundry Room

Motorized Control

NR

Friction rate

Sealing

Location

Insulation level

Gas hot water storage

Pipe Insulation(d < 1.5in. / d ≥

1.5 in.)

Drain Water Heat Recovery

80% Et

None

Motorized Control

NR

Decoupled

(7)

0.08 in. w.c./100 feet

Seal class B

R-6

(8)

90% Et

1 in. / 1.5 in.

(8)

Showers only; 30% efficiency

(9)

12

Energy and Water Conservation Design Requirements for SRM Projects

Notes:

1. Baseline requirements are from ANSI/ASHRAE/IESNA Standard 90.1-2004.

2. U-values and R-values for assemblies and their definitions, requirements, and determinations can be found in ANSI/ASHRAE/IESNA Standard 90.1-2007, Normative Appendix A.

3. Light colored and cool roofs: reflect and emit the sun's heat back to the sky instead of transferring it to the building below. "Coolness" is measured by two properties, solar reflectance and thermal emittance.

Both properties are measured from 0 to 1 and the higher the value, the "cooler" the roof. A high reflectance keeps much of the sun’s energy from being absorbed, while a high thermal emittance radiates away any solar energy that is absorbed, allowing the roof to cool more rapidly. Cool roofs are typically white and have a smooth surface. Commercial roof products that qualify as cool roofs fall into three categories: single-ply, liquid-applied, and metal panels. The solar reflectance and thermal emittance property values represent initial conditions as determined by a laboratory accredited by the

Cool Roof Rating Council.

Cool roofs are cost effective over air-conditioned spaces for buildings located in climate zones 1 - 5. In these locations, a minimum of 75% of the entire roof surface not used for roof penetrations shall be covered with roofing products that comply with one or more of the following:

 Have a minimum initial SRI of 78 for a low-sloped roof (a slope less than or equal to 2:12) and a minimum initial SRI of 29 for a steep-sloped roof (a slope of more than 2:12).

 Comply with the criteria for the US EPA’s Energy Star Program Requirements for Roof Products –

Eligibility Criteria.

For industrial buildings with only heating and ventilation, cool roofs can improve the comfort conditions

(and hence productivity) in the space.

In order to be considered a cool roof, a solar reflectance of 0.67 when tested in accordance with ASTM

C1549, ASTM E903, or ASTM E1918 and, in addition, a minimum thermal emittance of 0.75 when tested in accordance with ASTM C1371 or ASTM E408, or a minimum Solar Reflective Index of 78 when determined in accordance with the Solar Reflectance Index method in ASTM E1980 where standard white is SRI = 100 and standard black has SRI = 0. An SRI can be determined by the following equations:

Where:

SRI = 123.97 – 141.35(x) + 9.655(x

2

)

x

2 0 . 7 9 7

9 . 5 2 0 5

 

0 . 6 0 3

1 2 . 0

,

Where:

 is the solar absorptance (= 1 – solar reflectance)

 is the thermal emissivity, which were derived from ASTM E1980 assuming a medium wind speed,

and are listed in Table 12.

13

Energy and Water Conservation Design Requirements for SRM Projects

Roofing Type

Roof Coatings

Roof Coatings

Roof Coatings

Roof Coatings

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Metal Paint

Table 12. Characteristics of reflective roofing materials.

Color

White

Grey or Tan

Terra Cotta or Brown

Aluminized

Red

Terra Cotta

Bright Red

New Solar

Reflectance

Aged Solar

Reflectance

0.70 – 0.85 0.50 –0.65

0.70 0.50

0.40

0.50

0.30

0.40

0.25

0.35

0.35

0.25

0.35

0.35

New Thermal

Emittance

0.85

0.85

0.85

0.50

0.83

0.83

0.83

SRI

(ASTM

E1980

84 – 106

84

43

42

22

36

36

Tan

Dark Blue

Medium to Light Blue

Dark Brown

Medium to Light Brown

Dark Green

Medium to Light Green

White

Bright White

Black

Dark Grey

Medium to Light Grey

Pearlescent Colors

0.45

0.25

0.32

0.25

0.32

0.25

0.32

0.65

0.70

0.25

0.25

0.35

0.35

0.45

0.25

0.32

0.25

0.32

0.25

0.32

0.65

0.70

0.25

0.25

0.35

0.35

0.83

0.83

0.83

0.83

0.83

0.83

0.83

0.83

0.83

0.83

0.83

0.83

0.75

32

77

84

22

49

22

32

22

32

22

22

36

32

Copper Metal

Galvanized Steel

EPDM Membrane

TPO Membrane

TPO Membrane

PVC Membrane

PVC Membrane

Asphalt Shingle

Asphalt Shingle

Unpainted

Black

White

Grey

White

Grey

Dark Color

Light Color

Modified Bitumen Cap Sheet Dark Color

Modified Bitumen Cap Sheet Light Color

Modified Bitumen Cap Sheet White

0.40

0.05

0.80

0.50

0.80

0.50

0.10

0.25

0.10

0.25

0.50-0.60

0.20

0.10

0.60

0.40

0.60

0.40

0.10

0.25

0.10

0.25

0.40 – 0.45

0.50

0.85

0.85

0.85

0.85

0.85

0.85

0.85

0.85

0.85

0.85

99

57

4

23

26

0

99

57

4

23

57 - 71

14

Energy and Water Conservation Design Requirements for SRM Projects

1. NR means there is no requirement or recommendation for a component in this climate zone.

2. Increased Building Air tightness. Building air leakage (measured in cfm/ft

2

) is the average volume of air(measured in cubic feet per minute) that passes through a unit area of the building envelope (measured in square feet) when the building is maintained at a specified internal pressure (measured in Pascals).

ASHRAE has proposed a building air tightness requirement of 0.4 cfm/ft

2

@ 75 Pa as an addendum to

Standard 90.1-2004. ASHRAE has also proposed an approach to complying with the new requirement with a pressurization test to show that the building leakage does not exceed 0.4 cfm/ft

2

at 75 Pa. This air tightness requirement provides a number that can be used for the energy simulations and was assumed to be the baseline leakage rate. The air tightness requirement adopted by the U.S. Army for new construction is more stringent than the one proposed by ASHRAE and requires that the leakage rate must not exceed 0.25 cfm/ft

2 at 75 Pa, and was assumed for the energy efficient building models. To convert the values used for building leakage tests at the pressure difference of 75Pa to the values which can be used to calculate required excessive outdoor air supply rates, the following equation can be used ΔQ = Q75 * (5/75)

0.65

= 0.172 * Q75.

The excessive airflow rate for the building complying with the new ASHRAE 90.1 Standard air leakage requirement is 0.069 cfm/ft

2

. Respective number for the building built to the Army model RFP requirement is

0.043cfm/ft

2

.

3. Dedicated Outdoor Air System. A central dedicated outdoor air system (DOAS, Figure 1), provides:

a. outside air for building indoor air quality and humidity control, (the amount needed is typically less than the amount exhausted from the bathroom and kitchen), b. make-up air for bathroom and kitchen exhausts (when needed), and c. building pressurization to prevent infiltration which allows for reduction of heating/cooling and moisture loads on the system.

Figure 1. DOAS Schematic.

Central DOAS does not provide sensible heating or cooling. This is provided by a complementing heating and cooling system, which will be taking care of only sensible loads. Complementing system can be radiant ceiling system (suspended or embedded into the ceiling) or convective (four pipe or DX fan-coil units). There are 2 types specified: the first system is for humid climates with a high latent load specified with dual, in series DX coils and 45F supply air temperature on a reset schedule. The other system has a single high efficiency DX coil and a higher supply air temperature of 55F on a reset schedule.

4. Decoupling exhaust and supply systems for laundry rooms. To reduce unneeded energy use for heating and cooling of the make-up air and for air transportation of supply and exhausted air from the dryers,

15

Energy and Water Conservation Design Requirements for SRM Projects

laundry exhaust and supply systems are separated in the efficient building model from the rest of the building exhaust and supply systems. Laundry exhaust system and corresponding make-up systems operate only when dryers are operating.

5. Duct and pipe insulation, values are from the ASHRAE Advanced Energy Design Guide for Highway

Lodging.

6. Drain Water Heat Recovery System. Domestic hot water (DHW) is one of the major heating energy users in the Army barrack buildings. With an average usage rate of 30gal/day per occupant at 110oF, depending upon location and climate, DHW can consume more than 60% of the total annual heating energy supplied to barrack buildings and be the dominant hot water consumer during the non-heating season. Approximately

80-90% of hot water energy goes down the drain. Gravity-Film Heat Exchanger (GFX) is a vertical counterflow heat exchanger that extracts heat out of drain water and applies it to preheat the cold water be mixed with hot water to be used in the shower. The CFX consists of a 3-or 4-inch central cooper pipe (that carries the warm wastewater) with a ½-in.cooper coils wound around the central pipe. Heat is transferred from the wastewater passing through the large, central pipe to the cold water simultaneously moving upward through the coils on the outside of the pipe. The coils are flattened a little to increase the contact area and improve heat transfer. The system is beneficial for use with showers where the use of hot and cold water and the production of waste-water from the shower occur at the same time. The most efficient application is to combine several shower drains for each GFX.

16

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